# Build recipe for libevent.
#
# Copyright (c) 2018 Markus Tornow, <tornow@riseup.net>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

program=libevent
version=2.1.8
release=1
srcdir=libevent-2.1.8-stable 

# Set 'outdir' for a nice and well-organized output directory
outdir="${outdir}/${arch}/libs"

tarname=${program}-${version}-stable.tar.gz

# Remote source(s)
fetch=https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/"$tarname"

description="
libevent – an event notification library.

Libevent API provides a mechanism to execute a callback function when a specific event occurs on a file descriptor or after a timeout has been reached. Furthermore, libevent also support callbacks due to signals or regular timeouts.
libevent is meant to replace the event loop found in event driven network servers. An application just needs to call event_dispatch() and then add or remove events dynamically without having to change the event loop.

Currently, libevent supports /dev/poll, kqueue(2), event ports, POSIX select(2), Windows select(), poll(2), and epoll(4). The internal event mechanism is completely independent of the exposed event API, and a simple update of libevent can provide new functionality without having to redesign the applications. As a result, Libevent allows for portable application development and provides the most scalable event notification mechanism available on an operating system. Libevent can also be used for multi-threaded applications, either by isolating each event_base so that only a single thread accesses it, or by locked access to a single shared event_base. Libevent should compile on Linux, *BSD, Mac OS X, Solaris, Windows, and more.

Libevent additionally provides a sophisticated framework for buffered network IO, with support for sockets, filters, rate-limiting, SSL, zero-copy file transmission, and IOCP. Libevent includes support for several useful protocols, including DNS, HTTP, and a minimal RPC framework.

More information about event notification mechanisms for network servers can be found on Dan Kegel s The C10K problem web page.
"

homepage=http://libevent.org/
license="3-clause BSD"

# Source documentation
docs="ChangeLog LICENSE"
docsdir="${docdir}/${program}-${version}"

build()
{
    set -e

    unpack "${tardir}/$tarname"

    cd "$srcdir"

    patch -Np0 -i ${worktree}/patches/libevent/fix-libressl-2.7.patch
    
    ./configure CFLAGS="$QICFLAGS" LDFLAGS="$QILDFLAGS" \
     $configure_args \
     --libdir=/usr/lib${libSuffix} \
     --infodir=$infodir \
     --mandir=$mandir \
     --docdir=$docdir \
     --build="$(cc -dumpmachine)"

    make -j${jobs} V=1
    make -j${jobs} DESTDIR="$destdir" install

    # Compress info documents deleting index file for the package
    if test -d "${destdir}/$infodir"
    then
        rm -f "${destdir}/${infodir}/dir"
        lzip -9 "${destdir}/${infodir}"/*
    fi

    # Compress and link man pages (if needed)
    if test -d "${destdir}/$mandir"
    then
        (
            cd "${destdir}/$mandir"
            find . -type f -exec lzip -9 '{}' +
            find . -type l | while read -r file
            do
                ln -sf "$(readlink -- "$file").lz" "${file}.lz"
                rm -- "$file"
            done
        )
    fi

    # Copy documentation
    mkdir -p "${destdir}${docsdir}"
    cp -p $docs "${destdir}${docsdir}/"
}


